/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMesh3.h
Insert a new vertex inside a triangle, ie do a 1 to 3 triangle split
Ok on success, or enum value indicates why operation cannot be applied. Mesh remains unmodified on error.
virtual [EMeshResult](API\Runtime\GeometryCore\UE__Geometry__EMeshResult) PokeTriangle ( int TriangleID, const FVector3d & BaryCoordinates, [FPokeTriangleInfo](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3\FPokeTriangleInfo) & PokeInfo )